From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 30475C433EF for ; Thu, 21 Jul 2022 16:42:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231805AbiGUQmh (ORCPT ); Thu, 21 Jul 2022 12:42:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47304 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230163AbiGUQmh (ORCPT ); Thu, 21 Jul 2022 12:42:37 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CE9F780F42 for ; Thu, 21 Jul 2022 09:42:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1658421756; x=1689957756; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=Q74zMSjVW3u+S+6GpIAC3Uoeobj/pRcAUBaDQN6WMlI=; b=m3WEYOWJ/QEtL3N1K62jbD/oZpkRReAeM2uKcNzWHyMXyf6UXABZlw3S fJxH0jnq7KPp0kCSBWlt+HtZPqv6KMW67cozRT6n+ekONtGm9ZWIID+KT F5Ye5ky1TI+1MVq55JMRFzCOFbN2g91QPMctkEBaHg9c/ybVuATcsGuZx xofUvx8q/Kp/GValQuNKBtS4P4EQowMZVzhlTXCBzKdV1qOeQ5XI3/EBU SMPQVWkS1D99xxZT7AFhOm606jAOQK1se0EXd57nJeVu+MqLpq2CGYJ6t e3G0222nqvuQkxxzUsBHYp66gtk7Cb45FJdPNEvHv+VuXlQx6IIrMbCM4 w==; X-IronPort-AV: E=McAfee;i="6400,9594,10415"; a="351092598" X-IronPort-AV: E=Sophos;i="5.93,183,1654585200"; d="scan'208";a="351092598" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jul 2022 09:42:36 -0700 X-IronPort-AV: E=Sophos;i="5.93,183,1654585200"; d="scan'208";a="573814359" Received: from vasantgx-mobl.amr.corp.intel.com (HELO [10.212.244.191]) ([10.212.244.191]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jul 2022 09:42:35 -0700 Message-ID: <111cc85d-0e49-ad45-84e9-1a71ce58a2ca@intel.com> Date: Thu, 21 Jul 2022 09:42:35 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.1 Subject: Re: [PATCH v5 1/3] x86/sgx: Repurpose the owner field as the virtual address of virtual EPC page Content-Language: en-US To: Zhiquan Li , linux-sgx@vger.kernel.org, tony.luck@intel.com, jarkko@kernel.org, dave.hansen@linux.intel.com Cc: seanjc@google.com, kai.huang@intel.com, fan.du@intel.com, cathy.zhang@intel.com References: <20220622093705.2891642-1-zhiquan1.li@intel.com> <20220622093705.2891642-2-zhiquan1.li@intel.com> From: Dave Hansen In-Reply-To: <20220622093705.2891642-2-zhiquan1.li@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-sgx@vger.kernel.org On 6/22/22 02:37, Zhiquan Li wrote: > diff --git a/arch/x86/kernel/cpu/sgx/virt.c b/arch/x86/kernel/cpu/sgx/virt.c > index 6a77a14eee38..776ae5c1c032 100644 > --- a/arch/x86/kernel/cpu/sgx/virt.c > +++ b/arch/x86/kernel/cpu/sgx/virt.c > @@ -46,10 +46,12 @@ static int __sgx_vepc_fault(struct sgx_vepc *vepc, > if (epc_page) > return 0; > > - epc_page = sgx_alloc_epc_page(vepc, false); > + epc_page = sgx_alloc_epc_page((void *)addr, false); > if (IS_ERR(epc_page)) > return PTR_ERR(epc_page); Was the 'vepc' value simply unused before?